CN116475776A - Numerical control AC double-pendulum head - Google Patents
Numerical control AC double-pendulum head Download PDFInfo
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- CN116475776A CN116475776A CN202310379805.0A CN202310379805A CN116475776A CN 116475776 A CN116475776 A CN 116475776A CN 202310379805 A CN202310379805 A CN 202310379805A CN 116475776 A CN116475776 A CN 116475776A
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- 230000008093 supporting effect Effects 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 31
- 230000007704 transition Effects 0.000 claims description 31
- 238000009434 installation Methods 0.000 claims description 23
- 239000003638 chemical reducing agent Substances 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 20
- 238000009826 distribution Methods 0.000 claims description 18
- 238000000926 separation method Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 125
- 239000010720 hydraulic oil Substances 0.000 description 11
- 210000001503 joint Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/12—Arrangements for cooling or lubricating parts of the machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a numerical control AC double-pendulum head, comprising: the C-axis component comprises a C-axis power output component, a C-axis braking component and a C-axis rotary joint component, wherein the C-axis power output component provides a power source, and the C-axis braking component provides braking force on the C-axis power output component and timely brakes the C-axis power output component; the A-axis part comprises an A-axis supporting frame, an A-axis power part, an A-axis braking part, an A-axis rotary joint part and an electric spindle part, wherein the A-axis supporting frame is driven on the C-axis power output part, the A-axis power part provides power for the rotation of the electric spindle part on the A-axis supporting frame, the A-axis braking part provides braking force on the A-axis supporting frame, and the A-axis rotary joint part is matched with the C-axis rotary joint part on the A-axis supporting frame to provide a circuit and an oil way for the A-axis power part, the A-axis braking part and the electric spindle part. The invention has the advantages of innovative structure, compact layout, high integration level, small volume, light weight, large torque, high precision and high rigidity.
Description
Technical Field
The invention relates to the technical field of machine tool accessories, in particular to a numerical control AC double-swing head.
Background
The numerical control AC double-swing head is a core executing element of a high-grade five-axis numerical control machine tool, and two degrees of rotation freedom are added at the tail end of a Z axis of the machine tool, so that an electric spindle at the tail end can process parts with more complex shapes under the linkage of five axes of the machine tool. Because of the requirements of small weight, small volume, high integration, high rigidity and high precision on the AC double-pendulum head, the AC double-pendulum head on the market mainly adopts direct-drive motor driving. Because of the requirement of large torque of the swinging head, the series and parallel arrangement technology of direct-drive motors is often used in the AC double-swinging head; because of the high precision requirement of the swinging head, expensive high-precision encoders are often used in direct drive motors; meanwhile, due to the high integration level of the double swinging heads, the cable arrangement inside the swinging heads becomes extremely complex in waterway and air channel arrangement; meanwhile, the technical threshold for designing and manufacturing the numerical control AC double-pendulum head is high by considering that the manufacturing and assembling precision requirements of the AC double-pendulum head are extremely high. Aiming at the difficulties, a numerical control AC double-pendulum head is designed by utilizing a special high-rigidity high-precision harmonic reducer of a turntable. The characteristics of small volume, large torque and high precision of the harmonic reducer are utilized, meanwhile, high-rigidity mechanical shafting arrangement is used, meanwhile, a hydraulic braking technology is integrated, and a rotating liquid distribution technology is utilized, so that the requirements of small weight, small volume, high integration level, high rigidity and high precision on double swinging heads are met.
Disclosure of Invention
In order to overcome the defects, the invention provides a numerical control AC double-swing head, which adopts the following technical scheme:
a digitally controlled AC double pendulum head comprising:
the C-axis component comprises a C-axis power output component, a C-axis braking component and a C-axis rotary joint component, wherein the C-axis power output component provides a power source, the C-axis braking component provides braking force on the C-axis power output component and timely brakes the C-axis power output component, and the C-axis rotary joint component provides a circuit and an oil way on the C-axis power output component;
the A-axis power piece is arranged on the C-axis power output piece and comprises an A-axis support frame, an A-axis power piece, an A-axis brake piece, an A-axis rotary joint piece and an electric spindle piece, wherein the A-axis support frame is driven on the C-axis power output piece, the A-axis power piece is used for providing power for the rotation of the electric spindle piece on the A-axis support frame, the A-axis brake piece is used for providing braking force on the A-axis support frame, and the A-axis rotary joint piece is matched with the C-axis rotary joint piece on the A-axis support frame to provide a circuit and an oil way for the A-axis power piece, the A-axis brake piece and the electric spindle piece.
Preferably, the C-axis power output member comprises a C-axis housing, a first motor, a first harmonic reducer and a C-axis support output member, wherein a first power line terminal, a first signal line terminal and a first hydraulic joint are arranged on a rear end cover of the C-axis housing; the first motor is a hollow servo motor and is arranged in the mounting cavity of the C-axis casing; the first harmonic reducer comprises a wave generator, a flexible gear and a rigid gear, one end of the wave generator penetrates through and is connected into a rotor of the first motor, and one end of the wave generator is embedded into a rear end cover of the first motor through a first bearing sleeved on the wave generator; the wave generator is embedded in the front end cover of the first motor through a second bearing; one end of the flexible gear is fastened in the inner cavity of the C-axis casing, and the other end of the flexible gear is sleeved outside the wave generator; the rigid gear is sleeved outside the other end of the flexible gear, and the inner teeth of the rigid gear are meshed with the outer teeth of the flexible gear.
Preferably, the C-axis support output member includes a first turret bearing, a first output shaft, a first adapter shaft, and a transition flange, the first turret bearing being secured in an inner cavity of the C-axis housing; one end of the first output shaft is fastened on one end of the first turntable bearing, and one end of the first output shaft is fastened on the other end face of the rigid wheel; the first transfer shaft is fastened on the other end of the first output shaft, a first cable transfer plate male end and a second cable transfer plate male end are arranged on the first transfer shaft, the transition flange is connected to the first transfer shaft, a first cable transfer plate female end and a second cable transfer plate female end are arranged on the transition flange, the first cable transfer plate female end is matched with the first cable transfer plate male end for insertion, and the second cable transfer plate female end is matched with the second cable transfer plate male end for insertion.
Preferably, the C-axis brake member includes an oil distribution ring and a brake bushing, the oil distribution ring is fixedly embedded in the inner cavity of the C-axis casing, one end of the brake bushing is embedded in the oil distribution ring, the other end of the brake bushing is fastened in the C-axis casing, the other end of the brake bushing is sleeved on the other end of the first output shaft, meanwhile, a second oil seal is embedded in the other end of the brake bushing, and the second oil seal enables dynamic seal between the brake bushing and the first output shaft.
Preferably, the C-axis rotary joint member comprises a low-speed protection tube, a first connecting shaft and a second transition sleeve, one end of the low-speed protection tube is fastened on the mounting surface of the first switching shaft, and the other end of the low-speed protection tube passes through the wave generator; a first axial oil passage is formed in the wall thickness of the low-speed protection pipe, and a radial oil passage is formed in the rear wall of the low-speed protection pipe; the plurality of first axial oil channels are uniformly distributed along the circumference of the low-speed protection pipe, a rear sealing end cover is fastened at the other end of the low-speed protection pipe, and the rear sealing end cover is in sealing connection with one end of the plurality of first axial oil channels; the other end of the first axial oil passage is correspondingly communicated with one end of a second axial oil passage on the first transfer shaft one by one, the other end of the second axial oil passage is communicated with one end of a third axial oil passage on the transition flange, and the other end of the third axial oil passage is embedded with a liquid transfer joint.
Preferably, one end of the first connecting shaft is fastened on a rear end cover of the C-axis casing, and the first connecting shaft is sleeved outside the low-speed protection tube; a fourth axial oil duct is arranged on the rear wall of the first connecting shaft, the fourth axial oil duct is communicated with an oil outlet groove on the inner wall of the first connecting shaft, the oil outlet groove is annular, and the fourth axial oil duct is communicated with the other end of the radial oil duct through the oil outlet groove; the plurality of fourth axial oil passages are uniformly distributed on the first connecting shaft along the circumferential direction, the plurality of fourth axial oil passages are correspondingly communicated with the plurality of oil outlet grooves one by one and are uniformly distributed along the axial direction of the first connecting shaft, and meanwhile, the plurality of fourth axial oil passages are correspondingly communicated with the plurality of radial oil passages one by one; the first connecting shaft inner wall circumference is provided with annular seal groove, and a plurality of annular seal grooves and a plurality of go out the oil groove and distribute in turn for every go out the oil groove upside down all has an annular seal groove, every annular seal groove is interior all to inlay and is equipped with the sealing washer.
Preferably, one end of the second transition sleeve is fastened on the other end of the first connecting shaft, one end of a fifth axial oil duct on the second transition sleeve is communicated with one end of the fourth axial oil duct in a sealing way, and a second hydraulic joint is embedded on the other end of the fifth axial oil duct; and a second power line terminal and a second signal line connecting terminal are arranged on the second transition sleeve.
Preferably, the A-Axis support frame is fastened on the other end face of the first adapter shaft; the A-axis power piece comprises a second motor, a second harmonic reducer and an A-axis output shaft, wherein the second motor is a hollow servo motor, the second motor is arranged in a left cavity of the A-axis support frame, and the second harmonic reducer is arranged in the left cavity of the A-axis support frame and is in transmission connection with the second motor; the structure of the A-axis braking part is the same as that of the C-axis braking part, an oil distribution ring of the A-axis braking part is embedded in a left cavity of the A-axis supporting frame, a braking bush of the A-axis braking part is embedded in the oil distribution ring of the A-axis braking part, and the braking bush of the A-axis braking part is sleeved on the A-axis output shaft.
Preferably, the A-Axis rotary joint piece comprises a second turntable bearing, a second connecting shaft, a mandrel, a clamping sleeve and a liquid separation flange, wherein the second turntable bearing is fastened in a right side cavity of the A-Axis support frame, one end of the second connecting shaft is embedded in the second turntable bearing, one end of the second connecting shaft is connected with the motorized spindle piece, and a first oil hole is formed in the mounting end face of the second connecting shaft and communicated with a second oil duct in the shell of the A-Axis support frame; the mandrel is embedded in the second connecting shaft, the clamping sleeve is fastened on the second turntable bearing, and the clamping sleeve is pre-tightened by radial screws and then clamped on the outer cylindrical surface of the second connecting shaft; the liquid separation flange is fastened on the other end face of the second connecting shaft, and one end of a third hydraulic connector on the liquid separation flange is communicated with the first oil hole through a third oil hole in the inner wall of the liquid separation flange.
Preferably, the electric spindle part comprises a spindle casing and an electric spindle, a fourth hydraulic joint is arranged in the spindle casing in a penetrating way, a horizontal installation through hole and a vertical installation through hole are formed in the spindle casing, and the spindle casing is respectively and fixedly connected with the A-axis output shaft and the second connecting shaft through two ends of the horizontal installation through hole; the vertical installation through holes are rectangular holes, the electric spindle is fixedly embedded in the vertical installation through holes, four triangular through holes are formed between the electric spindle and the four corners of the vertical installation through holes, and the four triangular through holes are used for penetrating cables on the rear end face of the electric spindle.
The invention at least comprises the following beneficial effects:
1) The numerical control AC double-pendulum head has the advantages of innovative structure, compact layout, high integration level, small volume, light weight, large torque, high precision and high rigidity;
2) The numerical control AC double-pendulum head utilizes the characteristics of small volume, large torque and high precision of the harmonic reducer, so that the layout of the AC pendulum head is simplified, the numerical control AC double-pendulum head is particularly suitable for the technical requirements of the AC pendulum head on a power source, the problem that the torque of a direct drive motor is insufficient under the same volume and the serial-parallel connection layout is not required to be considered, and the design and manufacturing difficulty is greatly simplified;
3) The numerical control AC double-pendulum head creatively integrates the rotary joint and the liquid passage in the part, so that the utilization rate of the internal space of the pendulum head is greatly improved, and the arrangement problem of the channels of C-axis liquid is simplified;
4) The numerical control AC double-swinging-head C-axis gas-liquid channel and the cable channel are arranged separately, so that the hollow aperture of the cable channel can be effectively reduced, on one hand, the requirements on the hollow aperture of a motor and an encoder are reduced, and on the other hand, the cable is only arranged in the hollow hole, and the flexibility of the cable is far greater than that of the liquid pipeline, so that the fixing and distribution problems of the cable are greatly simplified, and the problem of mixed running of a complex cable, an air pipe and a hydraulic pipeline is solved;
5) The connecting position of the A shaft and the C shaft of the numerical control AC double-swinging head adopts a socket terminal row mode, the socket terminal row is integrated in a part, the socket terminal row can be installed in a split mode, the butt joint is reliable, and the connecting problem of cables during assembly is greatly simplified;
6) The numerical control AC double-pendulum head utilizes the output characteristics of small volume and large torque of the harmonic speed reduction module, particularly has no problems of creeping, creeping and high heat generation of a direct drive motor and liquid cooling heat dissipation under the working condition of low speed and heavy load, and greatly simplifies the cooling scheme of the whole machine;
7) The numerical control AC double-swinging-head A shaft adopts a double-fork-arm integrated double-support structure design, so that the machining error can be reduced and the rigidity of the whole machine can be improved on the premise of realizing the assembly feasibility of the whole machine;
8) The gas-liquid channel of the numerical control AC double-swing head main shaft is integrated in the main shaft shell, so that the wiring scheme of a gas-liquid pipeline is simplified, and the heat of the main shaft can be taken away by utilizing gas-liquid, thereby being convenient for heat dissipation.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a front view of a digitally controlled AC double pendulum head according to the present invention;
FIG. 2 is a schematic view of a three-dimensional structure of a numerical control AC double-pendulum head according to the present invention;
FIG. 3 is a top view of a digitally controlled AC double pendulum head according to the present invention;
FIG. 4 is a schematic view of a three-dimensional cross-sectional structure of the numerical control AC double-swing head in the direction A-A in FIG. 3;
FIG. 5 is an enlarged view of a portion of B of FIG. 4 of the present invention;
FIG. 6 is an enlarged view of a portion of C of FIG. 4 of the digitally controlled AC double pendulum;
FIG. 7 is a partial enlarged view of D in FIG. 4 of the digitally controlled AC double pendulum according to the present invention;
FIG. 8 is an exploded view of a numerical control AC double pendulum head of the present invention;
FIG. 9 is a perspective view of a low speed protective tube in a digitally controlled AC double pendulum head according to the present invention;
fig. 10 is a schematic perspective view of a spindle case in the numerical control AC double pendulum head according to the present invention.
Wherein: 1-C shaft shell, 2-first motor, 3-first harmonic reducer, 5-mounting flange, 6-wave generator, 7-flexible gear, 8-rigid gear, 9-first transition sleeve, 10-first rotating table bearing, 11-first output shaft, 12-first rotating shaft, 13-transition flange, 14-first cable adapter plate male end, 15-second cable adapter plate male end, 17-second cable adapter plate female end, 18-oil distributing ring, 19-brake bushing, 20-low-speed protection tube, 21-first connecting shaft, 22-second transition sleeve, 23-first axial oil duct, 24-radial oil duct, 25-rear sealing end cover, 26-second axial oil duct, 27-third axial oil duct, 28-fourth axial oil duct, 29-oil outlet groove, 30-sealing ring, 31-fifth axial oil duct, 32-second hydraulic joint, 33-A shaft support frame, 34-left end cover, 35-right end cover, 36-second motor, 37-second harmonic reducer, 38-A shaft output shaft, 39-second turntable bearing, 40-second connecting shaft, 41-core shaft, 42-clamping sleeve, 43-liquid separation flange, 44-third hydraulic joint, 45-main shaft shell, 46-electric main shaft, 47-fourth hydraulic joint, 48-horizontal installation through hole, 49-vertical installation through hole, 50-encoder, 51-liquid switching joint.
Detailed Description
The technical solution of the present invention will be described in detail below by way of examples with reference to the accompanying drawings. It should be noted that the description of these examples is for aiding in understanding the present invention, but is not intended to limit the present invention.
The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: the terms "/and" herein describe another associative object relationship, indicating that there may be two relationships, e.g., a/and B, may indicate that: the character "/" herein generally indicates that the associated object is an "or" relationship.
According to the figures 1-10, the numerical control AC double pendulum head comprises a C-axis member and an A-Axis member, the A-Axis member being arranged on the C-axis member. The C-axis part comprises a C-axis power output part, a C-axis braking part and a C-axis rotary joint part, and the C-axis braking part and the C-axis rotary joint part are both arranged on the C-axis power output part. The C-axis power output piece comprises a C-axis shell 1, a first motor 2, a first harmonic reducer 3 and a C-axis supporting output piece, wherein the first motor 2, the first harmonic reducer 3 and the C-axis supporting output piece are all arranged on the C-axis shell 1. The rear end cover of the C-axis casing 1 is provided with a first power line terminal, a first signal line wiring terminal and a first hydraulic connector, and the first power line terminal, the first signal line wiring terminal and the first hydraulic connector are used for the C-axis piece.
The first motor 2 is a hollow servo motor, and the first motor 2 is fixed in a mounting cavity of the C-axis casing 1 through a mounting flange 5 to provide a power source. The first harmonic reducer 3 comprises a wave generator 6, a flexible gear 7 and a rigid gear 8, one end of the wave generator 6 penetrates through and is connected into a rotor of the first motor 2, a first bearing is sleeved at one end of the wave generator 6, and the wave generator 6 is embedded into a rear end cover of the first motor 2 through the first bearing, so that the wave generator 6 can circumferentially rotate in the rear end cover of the first motor 2. The middle end position of the wave generator 6 is sleeved with a second bearing, and the wave generator 6 is embedded in the front end cover of the first motor 2 through the second bearing, so that the wave generator 6 can circumferentially rotate in the front end cover of the first motor 2. By the two-point supporting action of the first bearing and the second bearing on the wave generator 6 along the axial direction, the stability of the wave generator 6 in the rotating process and the stability of the wave generator 2 are improved. One end of the flexible gear 7 is fastened in the inner cavity of the C-axis casing 1 through a first screw, and the other end of the flexible gear 7 is sleeved outside the wave generator 6. The rigid gear 8 is sleeved outside the other end of the flexible gear 7, and the inner teeth of the rigid gear 8 are meshed with the outer teeth of the flexible gear 7. Furthermore, a first transition sleeve 9 is fastened on one end face of the rigid wheel 8 through a second screw, and the first transition sleeve 9 is in rotary sealing fit with a first oil seal in the C-axis casing 1. In the process that the rigid wheel 8 drives the first transition sleeve 9 to rotate, the first oil seal plays a role in dynamic seal between the first harmonic reducer 3 and the C-axis casing 1.
The C-axis support output piece comprises a first turntable bearing 10, a first output shaft 11, a first adapter shaft 12 and a transition flange 13, wherein the first turntable bearing 10 is fastened in the inner cavity of the C-axis casing 1 through a third screw, one end of the first output shaft 11 is fastened on one end of the first turntable bearing 10 through a fourth screw, the mounting surface comprises the inner hole and the end face of the first turntable bearing 10, and one end of the first output shaft 11 is fastened on the other end face of the rigid wheel 8 through a fifth screw so as to output the torque of the rigid wheel 8 outwards. The first coupling shaft 12 is fastened to the other end of the first output shaft 11 by a sixth screw. The inner ring of the first adapter shaft 12 is provided with a first cable adapter plate male end 14 and a second cable adapter plate male end 15, the transition flange 13 is connected to the first adapter shaft 12, the inner ring of the transition flange 13 is provided with a first cable adapter plate female end and a second cable adapter plate female end 17, the first cable adapter plate female end is matched and inserted with the first cable adapter plate male end 14, and the second cable adapter plate female end 17 is matched and inserted with the second cable adapter plate male end 15. Further, an encoder 50 is connected to one end of the wave generator 6, and the encoder 50 is mounted on the housing of the first motor 2.
The C-axis braking part comprises an oil distribution ring 18 and a braking bush 19, wherein the oil distribution ring 18 is fixedly embedded in the inner cavity of the C-axis casing 1, one end of the braking bush 19 is embedded in the oil distribution ring 18, the other end of the braking bush 19 is fastened in the C-axis casing 1, the other end of the braking bush 19 is sleeved on the other end of the first output shaft 11, meanwhile, a second oil seal is embedded in the other end of the braking bush 19, and the second oil seal enables dynamic sealing between the braking bush 19 and the first output shaft 11. Hydraulic oil required by the C-axis braking part is introduced from the first hydraulic connector into a hydraulic oil channel in the C-axis casing 1, and enters an oil cavity between the oil distribution ring 18 and the brake bushing 19, and the brake bushing 19 is forced to uniformly and radially deform due to the radial pressure of the hydraulic oil, so that the outer wall of the first output shaft 11 is clamped, and a braking effect is achieved.
The C-axis rotary joint member comprises a low-speed protection tube 20, a first connecting shaft 21 and a second transition sleeve 22, one end of the low-speed protection tube 20 is fastened on the mounting surface of the first adapter shaft 12 through a seventh screw, and the other end of the low-speed protection tube 20 passes through the wave generator 6. The wall thickness of the low-speed protection pipe 20 is provided with a first axial oil passage 23, the first axial oil passage 23 is communicated with two end surfaces of the low-speed protection pipe 20, the rear wall of the low-speed protection pipe 20 is provided with a radial oil passage 24, one end of the radial oil passage 24 is communicated with the first axial oil passage 23, and the other end of the radial oil passage 24 is communicated with the outer wall surface of the low-speed protection pipe 20. Further, six first axial oil passages 23 are provided, and the six first axial oil passages 23 are uniformly distributed along the circumference of the low-speed protection tube 20. The other end of the low-speed protection tube 20 is fastened with a rear sealing end cover 25, and the rear sealing end cover 25 and one ends of the plurality of first axial oil channels 23 are sealed through a first 0-shaped ring. The other end of the first axial oil passage 23 is correspondingly communicated with one end of a second axial oil passage 26 on the first rotating shaft 12 one by one through a second O-shaped ring. The other end of the second axial oil passage 26 is communicated with one end of a third axial oil passage 27 on the transition flange 13 through a third O-ring, and a liquid adapter 51 is embedded at the other end of the third axial oil passage 27.
One end of the first connecting shaft 21 is fastened to the rear end cover of the C-axis casing 1 through an eighth screw, and the first connecting shaft 21 is sleeved outside the low-speed protection tube 20, and meanwhile, the first connecting shaft 21 is rotatably connected with the low-speed protection tube 20 through a third bearing with embedded ends. The rear wall of the first connecting shaft 21 is provided with a fourth axial oil duct 28, one end of the fourth axial oil duct 28 is communicated with the other end face of the first connecting shaft 21, the fourth axial oil duct 28 is communicated with an oil outlet groove 29 on the inner wall of the first connecting shaft 21, the oil outlet groove 29 is annular, and the fourth axial oil duct 28 is communicated with the other end of the radial oil duct 24 through the oil outlet groove 29. So that the oil outlet groove 29 can always keep the radial oil passage 24 and the fourth axial oil passage 28 to be communicated with oil delivery during the circumferential rotation of the low-speed protection tube 20 in the first connecting shaft 21. Further, six fourth axial oil channels 28 are provided, the six fourth axial oil channels 28 are uniformly distributed on the first connecting shaft 21 along the circumferential direction, the six fourth axial oil channels 28 are correspondingly and correspondingly communicated six oil outlet grooves 29 one by one and are uniformly distributed along the axial direction of the first connecting shaft 21, and meanwhile, the six fourth axial oil channels 28 are correspondingly and correspondingly arranged with the six radial oil channels 24 one by one, so that static sealing between the two is ensured.
The first connecting shaft 21 is circumferentially provided with annular seal grooves on the inner wall, and the annular seal grooves are seven, seven and six oil outlet grooves 29 are alternately distributed, so that an annular seal groove is formed on the upper side and the lower side of each oil outlet groove 29. And a sealing ring 30 is embedded in each annular sealing groove, and the sealing rings 30 can prevent hydraulic oil in the oil outlet groove 29 from leaking out in the circumferential rotation process of the low-speed protection pipe 20 and the first connecting shaft 21.
One end of the second transition sleeve 22 is fastened to the other end of the first connecting shaft 21 through a ninth screw, one end of a fifth axial oil passage 31 on the second transition sleeve 22 and one end of the fourth axial oil passage 28 are sealed and communicated through a fourth O-ring, and a second hydraulic joint 32 is embedded in the other end of the fifth axial oil passage 31. Specifically, the six fifth axial oil passages 31 and the six fourth axial oil passages 28 correspond one by one. The second transition sleeve 22 is provided with a second power line terminal and a second signal line terminal, and the second power line terminal and the second signal line terminal are used by the a shaft and the electric spindle 46.
The second hydraulic joint 32 inputs hydraulic oil into the fifth axial oil passage 31, the fifth axial oil passage 31 transfers hydraulic oil to the fourth axial oil passage 28, hydraulic oil of the fourth axial oil passage 28 transfers hydraulic oil to the radial oil passage 24 which rotates through the oil outlet groove 29, then transfers hydraulic oil to the second axial oil passage 26 through the first axial oil passage 23, the second axial oil passage 26 transfers hydraulic oil to the third axial oil passage 27, and finally transfers hydraulic oil to the A-Axis member through the liquid transfer joint 51; the so-called fluid separation of the rotary joint is achieved by the oil delivery from the six fourth axial oil passages 28 to the six first axial oil passages 23 and the six second axial oil passages 26.
It should be further noted that, the cable coming out from the A-Axis includes the power cable and the signal cable required by the A-Axis, which are welded at the pin positions corresponding to the male end 14 of the first cable adapter plate and the male end 15 of the second cable adapter plate, and then led out by the pins at the upper end after the opposite connection of the female end 17 of the first cable adapter plate and the female end 17 of the second cable adapter plate, and then led out by the second power line terminal and the second signal line terminal after being bundled and fixed, and then led into the hollow hole of the second transition sleeve 22 through the hollow hole of the low-speed protection tube 20.
The second power line terminal, the second signal line connection terminal, the second hydraulic connector 32, the first cable adapter plate, the second cable adapter plate, the first axial oil duct 23, the second axial oil duct 26, the third axial oil duct 27, the fourth axial oil duct 28 and the fifth axial oil duct 31 are reasonably arranged, so that on one hand, the problem that when the A axis rotates, liquid of the A axis is discharged from the fixed position of the C axis is solved, and meanwhile, a liquid channel is integrated in the thick wall of the low-speed protection tube 20, so that the problem of complex wiring caused by sharing the channel with the cable is avoided; on the other hand, the cable adapter plate of the opposite-plug type is adopted to realize the outgoing line problem of the C-axis cable, so that a large number of cables can be prefabricated in a modularized mode and synchronously installed with mechanical assembly, meanwhile, the problem that the size of a butt joint terminal is too large when the cables are in butt joint is also solved, and meanwhile, the stability and the assemblability of the butt joint of the cables are improved.
The A-axis part comprises an A-axis supporting frame 33, an A-axis power part, an A-axis braking part, an A-axis rotary joint part and an electric spindle part, wherein the A-axis power part, the A-axis braking part and the A-axis rotary joint part are all arranged on the A-axis supporting part, and the electric spindle part is arranged on the A-axis power part. The bottom end of the A-Axis supporting frame 33 is fastened to the other end face of the first adapter shaft 12 through a tenth screw, and rotates along with the rotation of the first adapter shaft 12, and meanwhile, the free end of the transition flange 13 is tightly sleeved by the installation cavity of the A-Axis supporting frame 33. The left end cover 34 is fastened to the left side cavity of the A-axis support frame 33, and the right end cover 35 is fastened to the right side cavity of the A-axis support frame 33.
The A-axis power piece comprises a second motor 36, a second harmonic reducer 37 and an A-axis output shaft 38, the second motor 36 is a hollow servo motor, the second motor 36 is fixedly arranged in a left cavity of the A-axis support frame 33 to provide a power source, the second harmonic reducer 37 is arranged in the left cavity of the A-axis support frame 33 and is in transmission connection with the second motor 36 so as to reduce the rotating speed of the second motor 36 and output the rotating speed through the A-axis output shaft 38, one end of the A-axis output shaft 38 is connected to the second harmonic reducer 37, and the other end of the A-axis output shaft 38 is connected with the electric spindle piece. The second harmonic reducer 37 transmits the high-precision high-torque rotary motion to the electric spindle part through the A-axis output shaft 38, and drives the electric spindle part to rotate around the central line of the A-axis power part.
The structure of the A-axis brake piece is the same as that of the C-axis brake piece, an oil distribution ring of the A-axis brake piece is embedded in a left cavity of the A-axis support frame 33, a brake bushing of the A-axis brake piece is embedded in the oil distribution ring of the A-axis brake piece, the brake bushing of the A-axis brake piece is sleeved on the A-axis output shaft 38, and the brake bushing of the A-axis brake piece can hold the A-axis output shaft 38 tightly after receiving hydraulic pressure to play a role in braking.
The rotary joint member of the A-Axis comprises a second turntable bearing 39, a second connecting shaft 40, a mandrel 41, a clamping sleeve 42 and a liquid separating flange 43, wherein the second turntable bearing 39 is fastened in a right cavity of the supporting frame 33 of the A-Axis through an eleventh screw, one end of the second connecting shaft 40 is embedded in the second turntable bearing 39, and one end of the second connecting shaft 40 is connected with the electric spindle member so as to follow the electric spindle member. The mounting end surface of the second connecting shaft 40 is provided with uniformly distributed first oil holes which are communicated with a second oil duct in the shell of the A-shaft supporting frame 33; the mandrel 41 is embedded in the second connecting shaft 40, the two ends of the mandrel 41 are respectively sleeved with a fourth bearing, the mandrel 41 circumferentially rotates in the second connecting shaft 40 through the fourth bearings, the clamping sleeve 42 is fastened on the second turntable bearing 39 through a twelfth screw, the clamping sleeve 42 is pre-fastened through a radial screw and then clamped on the outer cylindrical surface of the second connecting shaft 40, an axial fixing effect is achieved, and the whole assembly can be gradually and sequentially installed from left to right during installation. The liquid separation flange 43 is fastened to the other end face of the second connecting shaft 40 through thirteen screws, and one end of a third hydraulic joint 44 on the liquid separation flange 43 is communicated with the first oil hole through a third oil hole in the inner wall of the liquid separation flange 43.
The electric spindle part comprises a spindle casing 45 and an electric spindle 46, a fourth hydraulic joint 47 is arranged in the spindle casing 45 in a penetrating manner, a horizontal installation through hole 48 and a vertical installation through hole 49 are arranged on the spindle casing 45, and the spindle casing 45 is respectively and tightly connected with the A-axis output shaft 38 and the second connecting shaft 40 through two ends of the horizontal installation through hole 48. The rear end face of the main shaft casing 45 is provided with a main shaft end cover, so that the protection function is realized. The vertical installation through holes 49 are rectangular holes, the width of the horizontal section of the vertical installation through holes 49 is the same as the outer diameter of the electric spindle 46, the electric spindle 46 is fixedly embedded in the vertical installation through holes 49, four triangular through holes are formed between the electric spindle 46 and four corners of the vertical installation through holes 49, the four triangular through holes are used for feeding cables on the rear end face of the electric spindle 46, the cables can pass through the four triangular through holes and then pass out from the hollow holes of the second motor 36 and the hollow holes of the second connecting shaft 40 to two sides, and then are upwards welded on pins of the first cable adapter plate female end and the second cable adapter plate female end 17, and wiring is completed. The pipeline at the tail end of the electric spindle 46 enters the oil passage in the shell of the spindle housing 45 after passing through the fourth hydraulic joint 47, then enters the right space of the A-axis support frame 33 after passing through the oil passage in the second connecting shaft 40, the oil passage in the mandrel 41 and the oil passage in the liquid separating flange 43, and finally enters the liquid transfer joint 51 upwards after passing through the third hydraulic joint 44.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. Numerical control AC double pendulum head, its characterized in that includes:
the C-axis component comprises a C-axis power output component, a C-axis braking component and a C-axis rotary joint component, wherein the C-axis power output component provides a power source, the C-axis braking component provides braking force on the C-axis power output component and timely brakes the C-axis power output component, and the C-axis rotary joint component provides a circuit and an oil way on the C-axis power output component;
the A-axis power piece is arranged on the C-axis power output piece and comprises an A-axis support frame, an A-axis power piece, an A-axis brake piece, an A-axis rotary joint piece and an electric spindle piece, wherein the A-axis support frame is driven on the C-axis power output piece, the A-axis power piece is used for providing power for the rotation of the electric spindle piece on the A-axis support frame, the A-axis brake piece is used for providing braking force on the A-axis support frame, and the A-axis rotary joint piece is matched with the C-axis rotary joint piece on the A-axis support frame to provide a circuit and an oil way for the A-axis power piece, the A-axis brake piece and the electric spindle piece.
2. The numerical control AC double pendulum head according to claim 1, wherein the C-axis power take off comprises a C-axis housing, a first motor, a first harmonic reducer and a C-axis support output, wherein a first power line terminal, a first signal line terminal and a first hydraulic joint are provided on a rear end cap of the C-axis housing; the first motor is a hollow servo motor and is arranged in the mounting cavity of the C-axis casing; the first harmonic reducer comprises a wave generator, a flexible gear and a rigid gear, one end of the wave generator penetrates through and is connected into a rotor of the first motor, and one end of the wave generator is embedded into a rear end cover of the first motor through a first bearing sleeved on the wave generator; the wave generator is embedded in the front end cover of the first motor through a second bearing; one end of the flexible gear is fastened in the inner cavity of the C-axis casing, and the other end of the flexible gear is sleeved outside the wave generator; the rigid gear is sleeved outside the other end of the flexible gear, and the inner teeth of the rigid gear are meshed with the outer teeth of the flexible gear.
3. The digitally controlled AC double pendulum head of claim 2 wherein said C-axis support output member comprises a first turret bearing, a first output shaft, a first adapter shaft and a transition flange, said first turret bearing being secured in an interior cavity of said C-axis housing; one end of the first output shaft is fastened on one end of the first turntable bearing, and one end of the first output shaft is fastened on the other end face of the rigid wheel; the first transfer shaft is fastened on the other end of the first output shaft, a first cable transfer plate male end and a second cable transfer plate male end are arranged on the first transfer shaft, the transition flange is connected to the first transfer shaft, a first cable transfer plate female end and a second cable transfer plate female end are arranged on the transition flange, the first cable transfer plate female end is matched with the first cable transfer plate male end for insertion, and the second cable transfer plate female end is matched with the second cable transfer plate male end for insertion.
4. The numerically controlled AC double pendulum head according to claim 3, wherein said C-axis brake member comprises an oil distribution ring and a brake bushing, said oil distribution ring is fixedly embedded in said C-axis housing cavity, one end of said brake bushing is embedded in said oil distribution ring, the other end of said brake bushing is fastened in said C-axis housing, and said other end of said brake bushing is sleeved on the other end of said first output shaft, while said other end of said brake bushing is embedded with a second oil seal, said second oil seal dynamically sealing between said brake bushing and said first output shaft.
5. The digitally controlled AC double pendulum head of claim 3 or 4 wherein said C-axis swivel joint assembly comprises a low speed protective tube, a first connecting shaft and a second transition sleeve, said low speed protective tube having one end secured to a mounting surface of said first adapter shaft and the other end passing through said wave generator; a first axial oil passage is formed in the wall thickness of the low-speed protection pipe, and a radial oil passage is formed in the rear wall of the low-speed protection pipe; the plurality of first axial oil channels are uniformly distributed along the circumference of the low-speed protection pipe, a rear sealing end cover is fastened at the other end of the low-speed protection pipe, and the rear sealing end cover is in sealing connection with one end of the plurality of first axial oil channels; the other end of the first axial oil passage is correspondingly communicated with one end of a second axial oil passage on the first transfer shaft one by one, the other end of the second axial oil passage is communicated with one end of a third axial oil passage on the transition flange, and the other end of the third axial oil passage is embedded with a liquid transfer joint.
6. The digitally controlled AC double pendulum head of claim 5, wherein said first connecting shaft is secured at one end to a rear end cap of said C-axis housing and said first connecting shaft is sleeved outside said low speed protection tube; a fourth axial oil duct is arranged on the rear wall of the first connecting shaft, the fourth axial oil duct is communicated with an oil outlet groove on the inner wall of the first connecting shaft, the oil outlet groove is annular, and the fourth axial oil duct is communicated with the other end of the radial oil duct through the oil outlet groove; the plurality of fourth axial oil passages are uniformly distributed on the first connecting shaft along the circumferential direction, the plurality of fourth axial oil passages are correspondingly communicated with the plurality of oil outlet grooves one by one and are uniformly distributed along the axial direction of the first connecting shaft, and meanwhile, the plurality of fourth axial oil passages are correspondingly communicated with the plurality of radial oil passages one by one; the first connecting shaft inner wall circumference is provided with annular seal groove, and a plurality of annular seal grooves and a plurality of go out the oil groove and distribute in turn for every go out the oil groove upside down all has an annular seal groove, every annular seal groove is interior all to inlay and is equipped with the sealing washer.
7. The numerically controlled AC double pendulum head according to claim 5, wherein one end of said second transition sleeve is fastened to the other end of said first connecting shaft, and one end of a fifth axial oil passage on said second transition sleeve is sealed and communicated with one end of said fourth axial oil passage, while the other end of said fifth axial oil passage is embedded with a second hydraulic joint; and a second power line terminal and a second signal line connecting terminal are arranged on the second transition sleeve.
8. The numerically controlled AC double pendulum head according to any one of claims 1-4, wherein said A-Axis support bracket is fastened to the other end face of said first adapter shaft; the A-axis power piece comprises a second motor, a second harmonic reducer and an A-axis output shaft, wherein the second motor is a hollow servo motor, the second motor is arranged in a left cavity of the A-axis support frame, and the second harmonic reducer is arranged in the left cavity of the A-axis support frame and is in transmission connection with the second motor; the structure of the A-axis braking part is the same as that of the C-axis braking part, an oil distribution ring of the A-axis braking part is embedded in a left cavity of the A-axis supporting frame, a braking bush of the A-axis braking part is embedded in the oil distribution ring of the A-axis braking part, and the braking bush of the A-axis braking part is sleeved on the A-axis output shaft.
9. The numerical control AC double-swinging head according to claim 8, wherein the A-Axis rotary joint piece comprises a second turntable bearing, a second connecting shaft, a mandrel, a clamping sleeve and a liquid separation flange, the second turntable bearing is fastened in a right side cavity of the A-Axis support frame, one end of the second connecting shaft is embedded in the second turntable bearing, one end of the second connecting shaft is connected with the electric spindle piece, and a first oil hole is formed in the mounting end face of the second connecting shaft and communicated with a second oil duct in the A-Axis support frame shell; the mandrel is embedded in the second connecting shaft, the clamping sleeve is fastened on the second turntable bearing, and the clamping sleeve is pre-tightened by radial screws and then clamped on the outer cylindrical surface of the second connecting shaft; the liquid separation flange is fastened on the other end face of the second connecting shaft, and one end of a third hydraulic connector on the liquid separation flange is communicated with the first oil hole through a third oil hole in the inner wall of the liquid separation flange.
10. The numerical control AC double-swing head according to claim 9, wherein the electric spindle part comprises a spindle housing and an electric spindle, a fourth hydraulic joint is arranged in the spindle housing in a penetrating way, a horizontal installation through hole and a vertical installation through hole are arranged on the spindle housing, and the spindle housing is respectively and firmly connected with the A-axis output shaft and the second connecting shaft through two ends of the horizontal installation through hole; the vertical installation through holes are rectangular holes, the electric spindle is fixedly embedded in the vertical installation through holes, four triangular through holes are formed between the electric spindle and the four corners of the vertical installation through holes, and the four triangular through holes are used for penetrating cables on the rear end face of the electric spindle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310379805.0A CN116475776A (en) | 2023-04-11 | 2023-04-11 | Numerical control AC double-pendulum head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310379805.0A CN116475776A (en) | 2023-04-11 | 2023-04-11 | Numerical control AC double-pendulum head |
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| CN116475776A true CN116475776A (en) | 2023-07-25 |
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| CN202310379805.0A Pending CN116475776A (en) | 2023-04-11 | 2023-04-11 | Numerical control AC double-pendulum head |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117564307A (en) * | 2024-01-19 | 2024-02-20 | 山东豪迈数控机床有限公司 | Main shaft pipeline connection structure and lathe |
-
2023
- 2023-04-11 CN CN202310379805.0A patent/CN116475776A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117564307A (en) * | 2024-01-19 | 2024-02-20 | 山东豪迈数控机床有限公司 | Main shaft pipeline connection structure and lathe |
| CN117564307B (en) * | 2024-01-19 | 2024-04-05 | 山东豪迈数控机床有限公司 | Main shaft pipeline connection structure and lathe |
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